The Samsung M393A8G40BB4-CWE is a 64GB DDR4-3200 registered ECC memory module positioned for enterprise server deployments, data center builds, and cloud infrastructure projects requiring continuous 24/7 operation. For resellers and system integrators, this SKU is a core BOM item for virtualization hosts, database tiers, and caching layers on DDR4 server platforms where registered DIMMs are mandatory for high-density population. Because DDR4 RDIMMs cannot be combined with DDR5 modules or unbuffered desktop memory, procurement teams should verify platform generation and slot population rules before committing to volume orders.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | Samsung |
| Part Number | M393A8G40BB4-CWE |
| Memory Type | DDR4 ECC Registered DIMM (RDIMM) |
| Capacity | 64GB |
| Speed | DDR4-3200 / PC4-25600 (actual speed depends on CPU and platform support) |
| Data Transfer Rate | 3200 Mbps |
| Rank Configuration | 2Rx4 (dual rank, x4 organization typical for server reliability features) |
| ECC Support | Yes (requires platform with ECC-capable memory controller) |
| Voltage | 1.2V |
| Pin Count | 288-pin |
| Module Type | Registered DIMM (RDIMM) |
| Chip Organization | (4G x4) × 36 |
| CAS Latency | CL22 / CL24 (varies by module revision) |
| Application | Enterprise Servers, Data Centers, Cloud Platforms |
| Operating Environment | 24/7 Server-Class Operation |
| Product Status | Enterprise Deployment / Limited Availability |
Supply & Sourcing Overview
Stock for this part is allocated on a batch basis. We maintain batch consistency for volume orders wherever possible, so modules shipped within a single purchase order typically carry the same production week and firmware/SPD revision — an important consideration for integrators standardizing mixed-revision-sensitive fleets. Current inventory levels change frequently given the limited-availability status of this SKU; confirmed orders are reserved upon receipt of payment or approved credit terms.
All units are covered by our standard wholesale warranty with structured RMA handling: defective modules reported within the RMA window are processed through a documented testing and replacement workflow, minimizing downtime for your service commitments. Typical order fulfillment is dispatched within standard lead times depending on quantity; allocated backorders are scheduled with confirmed delivery estimates. Exports are handled in compliance with CE, FCC, and RoHS requirements, with commercial invoices and packing documentation suitable for customs clearance in major destination markets.
Compatibility remains a key planning point for reseller customers: this module fits 288-pin DDR4 RDIMM slots only, is not compatible with DDR5 platforms, and cannot be mixed with LRDIMMs or unbuffered modules on the same channel. The 64GB 2Rx4 configuration delivers a strong balance of per-slot density and signal integrity for balanced channel population in dual-socket virtualization and storage nodes. Because CAS latency may vary by module revision, we advise verifying revision requirements against your server’s qualified vendor list (QVL) prior to placing volume purchases. For project pricing, stock confirmation, and batch-date verification, request a wholesale quote from our sales team.
Wholesale & Procurement Notes
- MOQ is negotiable depending on project scale and stock position.
- Tiered volume pricing available — contact sales to request a formal quotation.
- Typical lead time: 3–7 business days for in-stock orders; backorders quoted individually.
- Packing & shipping: anti-static bulk trays or retail-boxed units, with express, air, and sea freight options.
- RMA window: standard warranty coverage with replacement/credit processing for verified defects.
